- Improved scheduling latency when many gated pods ([#124848](https://github.com/kubernetes/kubernetes/pull/124848), [@gabesaba](https://github.com/gabesaba)) [SIG Scheduling and Testing]

    *  -  the `health` plugin now includes the `lameduck` option by default, which waits for a duration before shutting down.
* Kubeadm now includes CoreDNS version 1.6.5 ([#85108](https://github.com/kubernetes/kubernetes/pull/85108), [@rajansandeep](https://github.com/rajansandeep))
    *  - `kubernetes` plugin adds metrics to measure kubernetes control plane latency.

- Kubernetes is now built with go 1.21.11 ([#125369](https://github.com/kubernetes/kubernetes/pull/125369), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]

### Bug or Regression

- Improved scheduling latency when many gated pods ([#124866](https://github.com/kubernetes/kubernetes/pull/124866), [@gabesaba](https://github.com/gabesaba)) [SIG Scheduling and Testing]

### Serverside Apply - Beta 2

identified in large-scale clusters when deleting thousands of pods simultaneously across hundreds of nodes. Kubelets in this scenario can encounter temporarily increased latency of `delete pod` API calls -- above the target service level objective of 1 second. If you run clusters with this usage pattern and if pod deletion latency could be an issue for you, you might want to wait until the issue is resolved before you upgrade.

For more information and for updates on resolution of this...

- `kubelet` now emits a metric for end-to-end pod startup latency, including image pull. ([#121041](https://github.com/kubernetes/kubernetes/pull/121041), [@ruiwen-zhao](https://github.com/ruiwen-zhao))
- `kubelet` now exposes latency metrics of different stages of the node startup. ([#118568](https://github.com/kubernetes/kubernetes/pull/118568), [@qiutongs](https://github.com/qiutongs))

  1. For volumes provisioned/deleted via external provisioner/deleter, `storage_operation_duration_seconds` will NOT wait for the external operation to be done before reporting latency metric (effectively close to 0). This will be fixed by using `volum...

*   [beta] Flag `--chunk-size={SIZE}` is added to `kubectl get` to customize the number of results returned in large lists of resources. This reduces the perceived latency of managing large clusters because the server returns the first set of results to the client much more quickly. Pass 0 to disable this feature.([#53768](https://github.com/kubernetes/kubernetes/pull/53768),[ @smarterclayton](https://github.com/smarterclayton))...

- Fix: Azure file inline volume namespace issue in CSI migration translation ([#101235](https://github.com/kubernetes/kubernetes/pull/101235), [@andyzhangx](https://github.com/andyzhangx))

- Added `apiserver.latency.k8s.io/authentication` annotation to the audit log to record the
  time spent authenticating slow requests. Also added `apiserver.latency.k8s.io/authorization`